000145243 001__ 145243
000145243 005__ 20241015122513.0
000145243 0247_ $$2doi$$a10.1021/acs.jpcc.0c04621
000145243 0248_ $$2sideral$$a118904
000145243 037__ $$aART-2020-118904
000145243 041__ $$aeng
000145243 100__ $$aZhidkov, IS
000145243 245__ $$aInfluence of Ion Migration from ITO and SiO2 Substrates on Photo and Thermal Stability of CH3NH3SnI3 Hybrid Perovskite
000145243 260__ $$c2020
000145243 5060_ $$aAccess copy available to the general public$$fUnrestricted
000145243 5203_ $$aThe influence of light soaking and heat stress on the degradation of indium tin oxide (ITO)/CH3NH3SnI3 and SiO2/CH3NH3SnI3 hybrid perovskite is studied. The measurements of X-ray photoelectron survey spectra (XPS) showed an increase in the concentration of substrate ions in the surface layer of ITO/CH3NH3SnI3 and reduction of N:Sn and I:Sn ratios after 500 h of white light irradiation and 200 h of annealing at 90 degrees C. The high-energy-resolved XPS Sn three-dimensional (3d) spectra of ITO/CH3NH3 SnI3 indicated a consistent increase in the contribution of Sn4+ ions at these exposure times under light soaking and heat stress. Scanning electron microscopy (SEM) measurements show a violation of the continuity of the perovskite layer with the exposure time and an increase in the size of the voids, which is consistent with the indicated changes in the XPS spectra. On the other hand, we consider the effect of irradiation and annealing on the diffusion of the substrate elements and their chemical interaction with the overlying perovskite layers. The XPS Sn 3d, O ls, and valence band (VB) measurements and density functional theory (DFT) calculations reveal that at the initial stages of CH3NH3SnI3 degradation, the SnI4 phase separation occurs and with a further increase in exposure time, tin is oxidized to form a SnO2 phase. In addition, we found that CH3NH3SnI3 perovskite prepared on a SiO2 substrate is more stable than on an ITO substrate, and the effect of the oxidation of tin atoms due to the migration of oxygen ions is very weak. The theoretical modeling demonstrates that the formation of SnI2 defects in CH3NH3SnI3 became irreversible due to the oxidation by the migration of the oxygen ions from the substrate. The calculated formation energy of an oxygen vacancy in ITO is about 2 times smaller than in SiO2 that explains the instability of ITO/CH3NH3SnI3.
000145243 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000145243 590__ $$a4.126$$b2020
000145243 591__ $$aCHEMISTRY, PHYSICAL$$b68 / 162 = 0.42$$c2020$$dQ2$$eT2
000145243 591__ $$aMATERIALS SCIENCE, MULTIDISCIPLINARY$$b124 / 333 = 0.372$$c2020$$dQ2$$eT2
000145243 591__ $$aNANOSCIENCE & NANOTECHNOLOGY$$b56 / 106 = 0.528$$c2020$$dQ3$$eT2
000145243 592__ $$a1.401$$b2020
000145243 593__ $$aElectronic, Optical and Magnetic Materials$$c2020$$dQ1
000145243 593__ $$aEnergy (miscellaneous)$$c2020$$dQ1
000145243 593__ $$aSurfaces, Coatings and Films$$c2020$$dQ1
000145243 593__ $$aPhysical and Theoretical Chemistry$$c2020$$dQ1
000145243 593__ $$aNanoscience and Nanotechnology$$c2020$$dQ1
000145243 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000145243 700__ $$aBoukhvalov, DW
000145243 700__ $$aKukharenko, AI
000145243 700__ $$aFinkelstein, LD
000145243 700__ $$aCholakh, SO
000145243 700__ $$aAkbulatov, AF
000145243 700__ $$0(orcid)0000-0001-6040-1920$$aJuarez-Perez, EJ$$uUniversidad de Zaragoza
000145243 700__ $$aTroshin, PA
000145243 700__ $$aKurmaev, EZ
000145243 7102_ $$15005$$2555$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Ingeniería Química
000145243 773__ $$g124, 27 (2020), 14928-14934$$pJ. phys. chem., C$$tJournal of physical chemistry. C.$$x1932-7447
000145243 8564_ $$s654532$$uhttps://zaguan.unizar.es/record/145243/files/texto_completo.pdf$$yPostprint
000145243 8564_ $$s923740$$uhttps://zaguan.unizar.es/record/145243/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000145243 909CO $$ooai:zaguan.unizar.es:145243$$particulos$$pdriver
000145243 951__ $$a2024-10-15-10:50:37
000145243 980__ $$aARTICLE